Cooling water and additives - wingd.com · Maxigard Sodium nitrite + borate ... Nalcool 2000 Engine Water Treatment 9-108 Sodium nitrite + borate Sodium nitrite + borate Organic Acid

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Cooling water and additivesIssue 001 2018-02

Winterthur Gas & Diesel Ltd. Schützenstrasse 1-3 Tel. +41 (0)52 264 8844Winterthur Gas & Diesel AG P.O. box 414, 8401 Fax +41 (0)52 264 8866Winterthur Gas & Diesel S.A. Winterthur, Switzerland www.wingd.com

© 2018 Winterthur Gas & Diesel Ltd. – All rights reserved

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Table Of Contents

1 Introduction1.1 General for cooling water.................................................................................................................4

2 Cooling water2.1 Cooling water...................................................................................................................................52.2 Cooling water additives....................................................................................................................7

- 3 -

1.1 General for cooling water

This document is an excerpt from the WinGD operation manuals of texts for cooling water.

The document gives data to the items that follow:

• Requirements for cooling water

• List of validated cooling water additives

• List of dosage and concentration of cooling water additives.

all engines AA00-0000-00AAA-018I-A

Cooling water and additives General for cooling water

Winterthur Gas & Diesel Ltd. - 4 - Issue 001 2018-02

1 Introduction

2.1 Cooling water

An applicable treatment is used to give the cooling water the correct properties that preventsservice problems. Cooling water that has not had treatment can soon cause problems in thecooling system (eg corrosion, sediment or hard particles).

2.1.1 Raw water for cooling water

The raw water for cooling water has to obey the WinGD specifications, refer to Table 2.1.1 -Specifications for raw water.

Tab 2.1.1 Specifications for raw water

Parameter Value Test methodpH, (see Note) 6.5 to 8.5 ASTM D 1287 or D 1293Hardness Maximum 10°dH ASTM D 1126Chlorides (Cl-) Maximum 80 mg/l ASTM D 512 or D 4327Sulphates (SO4 2-) Maximum 150 mg/l ASTM D 516 or D 4327

NOTE: For reverse osmosis technologies, the minimum pH value is 6.0.

If you think there is a problem, you must do an analysis of the raw water and send the results toWinGD to get advice.

For the raw water WinGD recommends as follows:

• Fully desalinate the raw water before you fill it into the system.

• You can use condensate water (eg from the fresh water generators or from auxiliary steamsystems), but it must have additives. Condensate water is highly corrosive and must havecorrosion inhibitors to prevent problems.

• Use potable water or process water from the local mains only as a last option for a shortperiod. The hardness of this water must not be more than 10°dH (German hardnessdegrees). If the hardness is more than this limit, you must decalcify the water to the givenvalue.

• Do not use sea water as raw water. Sea water has a high salt content and causes damageto the cooling water system.

Corrosion protection oils (emulsion oils) are not recommended for the treatment of the coolingwater. If instructions about the use of corrosion protection oils are not obeyed and coolant checksare not sufficient, then water / oil emulsion can occur. This can cause the cooling system to becomeclogged.

2.1.2 Cooling water during operation

The cooling water must have the correct corrosion inhibitor. Inhibitors that contain nitrite andborate, or inhibitors that are related to the Organic Acid Technology (OAT), are known to besatisfactory. For a list of WinGD recommended products refer to 2.2 Cooling water additives.

The instructions of the manufacturer must be obeyed for the correct quantity of the corrosioninhibitor. You must do regular checks during operation to keep the correct concentration. It is

all engines AA00-0000-00AAA-030C-A

Cooling water and additives Cooling water


2 Cooling water

recommended that you choose such suppliers of inhibitors who can also give specified advice fornew cooling water and for operation.

If there are leaks, you must add the correct quantity of raw water with the correct concentration ofadditives. If evaporation causes a decrease of the coolant, add the applicable quantity of raw water(see Para 2.1.1 above). This will make sure that the concentration of additives is not too much.

After you have added the additives, the cooling water in the cooling system must have a pH valueof 8 to a maximum of 10.

2.1.3 Antifreeze

CAUTIONDamage Hazard: Antifreeze decreases the heat transfer rate of the cooling water. This cancause damage to the engine. If the concentration of the antifreeze is more than 20%, youcan operate the engine only at decreased load.

During usual operation, it is not necessary to use antifreeze. WinGD recommends to use antifreezeonly if the engine is stopped for a long period in conditions of cold / frost (ambient temperaturebelow the freezing point of water).

Always use the correct water / antifreeze ratio related to the ambient temperature. The instructionsof the manufacturer must be obeyed for the correct quantity of antifreeze. It is possible to use eachof the two types of high quality antifreeze that follow:

• Monopropylene glycol (MPG)

• Monoethylene glycol (MEG).

It is recommended that you use MPG, because it is better for the environment.

You must do regular checks during operation to keep the correct concentration.

You must obey the instructions of the manufacturer to prevent problems during operation.

You must make sure that the cooling water system has the correct concentration of corrosioninhibitor (see Para 2.1.2).

all engines AA00-0000-00AAA-030C-A

Cooling water and additives Cooling water


2.2

2.2.1

Cooling water additives

List of cooling water additives

The validated cooling water additives in Table 2.2.1 - List of validated cooling water additives(February 2018) are for closed cooling water circuits. For the specification of the cooling water refer to 2.1 Cooling water.

Tab 2.2.1 List of validated cooling water additives (February 2018)

Supplier Brand Additive typeAlm International S.A., France

www.alm-inter.com

Diaprosim RD11 (RD11M) Sodium nitrite

S.A. Arteco N.V., Belgium

www.arteco-coolants.com

Havoline XLI Organic Acid Technology

Ashland Speciality Chemical, USA

www.ashland.com

Drewgard 4109 Sodium nitrite + borate

Ashland Speciality Chemical, USA

www.ashland.com

DEWT-NC powder

Liquidewt

Maxigard

Sodium nitrite + borate


Sodium nitrite + borateChevron Global Lubricants, USA

www.chevronlubricants.com

Havoline XLI Organic Acid Technology

GE Water and Process Technolo-gies, Belgium

www.gewater.com

CorrShield NT 4293 Sodium nitrite + borate

GE Water and Process Technolo-gies, USA

www.gewater.com

CorrShield NT 4200 Sodium nitrite + borate

Korves Oy, Finland

+358 (14) 338 4001 (Fax)

Pekar J Organic Acid Technology

Kuwait Petroleum (Danmark) AS,Denmark

www.q8.com

Q8 Corrosion Inhibitor Long-Life

Organic Acid Technology

Marine Care B.V., The Nether-lands

www.marinecare.nl

Caretreat 2 Diesel Sodium nitrite + borate

Maritech AB, Sweden

www.maritech.se

Marisol CW Sodium nitrite + borate

Nalco Chemical Company, USA

www.nalco.com

TRAC102 (ex Nalcool 2000)

TRAC118 (ex EWT 9-108)


all engines AA00-0000-00AAA-101D-A

Cooling water and additives Cooling water additives


Supplier Brand Additive typeSuomen KL-Lämpö Oy, Finland

www.kl-lampo.com/eng

Korrostop KV Sodium molybdate

Total, France

www.total.com/en

WT Supra Organic Acid Technology

Vecom Marine Alliance B.V., TheNetherlands

www.vecom-group.com

Cool Treat NCLT (ex VecomCWT Diesel QC-2)


Wilhelmsen Chemicals AS, Nor-way

www.wilhelmsenchemicals.com

Dieselguard NB

Rocor NB liquid

Cooltreat AL

Nalcool 2000

Engine Water Treatment9-108



Organic Acid Technology



2.2.2 Dosage of cooling water additives

Table 2.2.2 - Dosage and concentration of cooling water additives shows the recommendeddosage and concentration of cooling water additives. WinGD recommends to start the dosagefrom the upper level of the given range. This is because the quantity of active corrosion inhibitorsdecreases during the service life of the engine.

Tab 2.2.2 Dosage and concentration of cooling water additives

Brand Dosage of 1 m3 of system ca-pacity

Concentration

Diaprosim RD11 (RD11M) 5 kg 1250 ppm as NO2

Havoline XLI 50 to 100 litres 1.8 to 3.7 Brix° of activecompounds measured witha supplier’s refractometer

Drewgard 4109 16 to 30 litres 640 to 1200 ppm as NO2

DEWT-NC powder

Liquidewt

Maxigard

3 to 4.5 litres

8 to 12 litres

16 to 30 litres

1500 to 2250 ppm as NO2

470 to 700 ppm as NO2


CorrShield NT 4293 10 litres 670 to 1000 ppm as NO2

CorrShield NT 4200 10 litres 670 to 1000 ppm as NO2

Pekar J 20 litres 30 ppm as MoQ8 Corrosion Inhibitor Long-Life 50 to 100 litres 1.8 to 3.7 Brix° of active

compounds measured witha supplier’s refractometer

Caretreat 2 Diesel 6 to 10 litres 1500 to 2500 ppm as NO2

Marisol CW 6 to 9 litres 1000 to 1500 ppm as NO2




Brand Dosage of 1 m3 of system ca-pacity

Concentration

TRAC102 (ex Nalcool 2000)

TRAC118 (ex EWT 9-108)

32 to 48 litres

2.25 to 3.4 litres

1000 to 1500 ppm as NO2


Korrostop KV 20 to 25 litres 120 to 150 ppm as MoWT Supra 50 to 100 litres 1.8 to 3.7 Brix° of active

compounds measured witha supplier’s refractometer

Cool Treat NCLT (ex Vecom CWTDiesel QC-2)

6 to 10 litres 1500 to 2500 ppm as NO2

Dieselguard NB

Rocor NB liquid

Cooltreat AL

2.0 to 4.8 litres

9.5 to 24.0 litres

50 to 100 litres

1000 to 2400 ppm as NO2

1000 to 2400 ppm as NO2

1.8 to 3.7 Brix° of activecompounds measured witha supplier’s refractometer

Nalcool 2000

Engine Water Treatment 9-108

32 to 48 litres

2.25 to 3.40 litres

1000 to 1500 ppm as NO2


The nitrite content of nitrite-based cooling water additives usually decreases during use. If thenitrite content decreases below the given limits, the risk of local corrosion increases.

The nitrite content can be given as sodium nitrite (NaNO2) or as nitrite (NO2).

1 mg/l as NO2 equals to 1.5 mg/l as NaNO2.

Nitrite-based cooling water additives do not give good protection against corrosion for aluminiumand its alloys. For these materials WinGD recommends not to use nitrite-based cooling wateradditives.




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Cooling water and additives - wingd.com · Maxigard Sodium nitrite + borate ... Nalcool 2000 Engine Water Treatment 9-108 Sodium nitrite + borate Sodium nitrite + borate Organic Acid